Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c222b6c404eb2c…

MALICIOUS

PDF

80.0 KB Created: 2021-03-05 11:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 09e7ff5233f2faead5ee09d557b1db2c SHA-1: 690692b143e1914f631ceeba9919f98aa92f8910 SHA-256: 57c222b6c404eb2ce6956f8c1030f9dd9fe80b5b145ca650f3fff5c78d9aa412
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document leverages a link farm on disposable hosting, with numerous URLs pointing to seemingly benign documents but ultimately serving as a deceptive lure. The presence of embedded URLs and the structure suggest an attempt to redirect users to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=mcculloch+250+chainsaw+manual PDF link annotation
    • https://nopiwevupemaro.weebly.com/uploads/1/3/4/6/134653234/4508249.pdfIn PDF document text
    • http://sosuziba.mypressonline.com/dish_network_address_to_mail_bill.pdfIn PDF document text
    • https://raguwagoneneza.weebly.com/uploads/1/3/1/3/131384547/jonex_kukirulid_mefemato.pdfIn PDF document text
    • http://parralax.net/pafuvotamawivinelu87r1.pdfIn PDF document text
    • http://slimerecipe.org/18365359487gffnn.pdfIn PDF document text
    • http://ruroraratotu.66ghz.com/6602288594.pdfIn PDF document text
    • http://batmbatm.ru/how_to_renew_comptia_a_certificationxtx89.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/rorakikipotozonipir.pdfIn PDF document text
    • http://temppicture.xyz/holy_quran_with_bangla_meaningc5r0r.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/jadanesaj.pdfIn PDF document text
    • http://linza.media/pregnant_and_giving_birth_to_boy_dream_meaningd3ml0.pdfIn PDF document text
    • https://bowefolezoz.weebly.com/uploads/1/3/1/4/131407704/3049183.pdfIn PDF document text
    • http://runibefulamad.22web.org/90529766249.pdfIn PDF document text
    • https://bituvawidosudi.weebly.com/uploads/1/3/6/0/136081872/6241019.pdfIn PDF document text
    • https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/d6de633891c42.pdfIn PDF document text
    • https://dozumudokasalog.weebly.com/uploads/1/3/4/9/134902229/5509801.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://tejoratu.epizy.com/vuxonupuwitot.pdfIn PDF document text
    • http://goseletew.epizy.com/nizopagoxedax.pdfIn PDF document text
    • http://mivazofirogo.epizy.com/jovapuxedatag.pdfIn PDF document text
    • http://lijazujarakowom.epizy.com/android_10_beta_samsung_s10.pdfIn PDF document text
    • http://juwikoramet.rf.gd/lazufepimorele.pdfIn PDF document text
    • http://lejubegow.epizy.com/nukuxepidaxiwadujilodal.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/bikemanulebakikajog.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 5440 bytes
SHA-256: 536a903ecbe626aeb00be0384d2c856373cc8a4e10cecd10eaec255d2167e259
font_01_sfnt_off0000fb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB11 6092 bytes
SHA-256: f93108cf96f879f3c60dc7af872da370e8c42f70a2a8ad396a3ba98cf4e00302
font_02_sfnt_off00010acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACC 12212 bytes
SHA-256: cf63ed17a7a054b2f3debcdee2766a77719cb0fccb8d3f488551a008ca4e83b4

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